Scaffold apparatus



A.'H. BLOMGREN SCAFFOLD APPARATUS Filed March 18, 1968 Dec. 30, 1969 QMN INVENTOR. i Alec/ms H BLOMGEE/V Mm W United States Patent 3 ClaimsABSTRACT OF THE DISCLOSURE Apparatus for connection to a masonryscaffold or the like to provide support on the opposite side of the wallbeing worked, thus enabling the entire area to be covered. The apparatushaving a first tubular member, and a second generally L-shaped memberhaving one leg adapted to slide within the tubular member for adjustingthe height of the device. On the other leg of the L-shaped member areone or more arms adapted to connect to the work scaffold.

BACKGROUND OF THE INVENTION Masonry scalfolds or the like are well knownin the art. Particularly well known are stacking scaffolds which stackto raise the workers as the work subject increases in height. Coveringssuch as canvas or plastic sheets are often draped around the scaffoldingto protect the workers from the elements. However, it is still necessaryfor work to stop when very cold temperatures are reached, because thecovering on the known work scafiolds are generally not sufficient toprovide protection for the worker and the wall being built. Theapparatus of this invention provides a support for covering on theopposite side of the Wall being worked that the scaffold is on, and isadapted to allow for increased work scaffold height, withoutreconstruction, by telescoping upward.

SUMMARY OF THE INVENTION Briefly described, the apparatus of thisinvention comprises a first tubular member having a footing memberattached to one end for providing stability when the one end is placedon a base such as the ground or a floor. A second member has a first legadapted to slide within the tubular member and a second leg at generally90 angles to the first leg. One or more connecting devices are providedon the second leg for attachment to the work scaffold. Thus, with thetubular member placed on one side of the wall, the second leg of thesecond member reaches over the wall, and is connected to the scaffoldwhich is on the other side. Securing or locking devices are connected tothe tubular member so that when the second leg is properly positionedfor the height of the work scaffold, it can be secured in place bylocking the first leg in the tubular member. Holding or mounting meansare also provided on the first leg and the tubular member for carryingcovering devices, such as 2 x 4s to which plastic sheeting or canvas canbe attached. Thus, with the use of the apparatus of this invention, itis possible to surround a work area and the workers with protectivecovering against the elements. If desired, heat can be provided withinthe covered area.

In the drawings:

FIGURE 1 is a perspective view of a work scaffold as connected to theapparatus of this invention shown in working relation to a wall or workarea; and

FIGURE 2 is a side plane view of the apparatus of FIGURE 1.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to both FIGURES l and2 there is first seen a stackable work scaffold 10, one of many typespresently 3,486,579 Patented Dec. 30, 1969 of a generally L-shapedmember 17. A second leg 19 ofmember 17 extends over wall 13 and hasconnected thereto a pair of arms 21 and 22. A pair of connecting devices23 and 24 are connected at the ends of arms 21 and 22, respectively.Connecting devices 23 and 24 are here shown as female or tubularmembers, adapted to mate with extending posts or male members 11.

A plurality of securing or locking devices 27 are provided on tubularmember 16 for locking leg 18 within member 16 at a desired position. InFIGURE 2 it can be seen that in this preferred embodiment lockingmembers 27 each comprises a nut 28 mounted over an aperture in tubularmember 16. A bolt 29 is provided for each nut 28, and adapted tobethreaded through the aperture and against leg 18 within tubular member16.

A footing device 26 is connected to the lower end of tubular member 16to provide adaquate stability when member 16 is placed on the floor, theground, or other base surface.

Also shown in FIGURES 1 and 2 are a plurality of holding devices 31adapted to be rigidly mounted to a member 16 and leg 18. It will beapparent, though not shown in the drawings, that a plurality ofapparatus 15 can be used to achieve coverage of the work area. Theholding device 31 shown in the figures is hooked to hold a. member suchas a 2 x 4 to which a covering such as a canvas or plastic sheeting canbe attached for covering the work area.

In operation, the apparatus 15 may be easily set up or removed, thussaving the work time of the wall builders. Member 16 is simply placedwith its footing side down so that footing 26 contacts the base.L-shaped member 17 is then placed in position such that leg 18telescopes or slides within tubular member 16. By adjusting the heightof member 17 so that connecting devices 23 and 24 slip over post 11, andby tightening locking devices 27 to prevent sliding of leg 18 in member16, the entire set-up operation has been completed. The same operationis followed for the further attachment of as many apparatus 15 as aredesired to hold the covering. It will be apparent that with theapparatus 15 connected to work scaffold 10 it is possible to completelysurround the work area of the wall, or to cover as much work area asdesired, so that work may be continued despite the inclemency of theweather, and so that the weather will not interfere with the materialsas well as the workmans efliciency.

Though the apparatus described above and shown in the drawings is thatof the preferred embodiment, it will be apparent that other similarembodiments may be used without departing from the spirit and scope ofthe invention. For example, connecting devices 23 and 24 can take a formother than the female members shown. Also, more or less 'of arms 21 and22 could be used if desired. Further, various locking devices can beused other than those. here shown as devices 27 including nuts 28 andbolts 29.

The embodiments of the invention in which an exclufive property orprivilege is claimed are defined as folows:

1. In a masonry scaffold or the like including a work scaffold, theimprovement comprising: tubular means; generally L-shaped means havingat least one leg sized for sliding with said tubular means; means forconnecting the other leg of said L-shaped member to the work scaffoldincluding a spaced pair of arms connected to and extending generallyparallel from said other leg of said L-shaped means; each of said armsterminating in a female member adapted to mate with an extending malemember on the Work scaffold; and lock means mounted on said tubularmeans for locking said one leg of said L-shaped means at a selectedposition in said tubular means.

2. The apparatus of claim 1 in which said lock means comprises: aplurality of apertures in said tubular means; a plurality of nutsmounted concentric with said apertures; and a plurality of bolts eachthreaded in one of said nuts and adapted to be threaded into'saidtubular means for contacting said one leg of said L-shaped means.

3. The apparatus of claim 1 including: a plurality of holding meansselectively mounted in spaced relation on said tubular means and saidL-shaped means, and adapted to hold cover means for wind blockage andthe like.

References Cited UNITED STATES PATENTS REINALDO P. MACHADO, PrimaryExaminer US. Cl. X.R. l82132

